What is a frequently monitored electrolyte level when prescribing ACE inhibitors?

When prescribing ACE inhibitors, monitoring potassium levels is critical due to the mechanism of action of these medications. ACE inhibitors, such as lisinopril and enalapril, block the angiotensin-converting enzyme, leading to a decrease in the production of angiotensin II. This results in reduced aldosterone secretion, which normally promotes potassium excretion in the kidneys. Consequently, with decreased aldosterone levels, patients may experience hyperkalemia, or elevated potassium levels, which can lead to serious cardiac complications if not monitored and managed appropriately.

Monitoring potassium is essential, especially in patients with impaired renal function or those taking additional medications that can raise potassium levels. Keeping a close eye on potassium helps ensure that any necessary adjustments can be made to the treatment plan to maintain safe electrolyte balance and mitigate potential risks associated with hyperkalemia.